Fix misspelling of getLteSignalStrenght.

Change to getLteSignalStrength.

Change-Id: Ie2acec9e01af0e64a61902383f06729a7cee1975
Lockscreen : Reference correct layout

Include correct layout for portrait.

Change-Id: I6de511357aec0f4364cd68c3ed740c7d4f47379d
Don't include flags in configuration change if their value hasn't changed.

This makes the check in updateFrom() match the logic in diff().

Change-Id: I3ab4e8460f7fbf985ef55b9514a8aa90d401d486